{"release":{"id":"DR1","released_on":"2026-08-21","doi":null,"url":"https://spacecatalog.org/releases#dr1"},"epoch":{"requested":"now","label":"J2026.677","julian_year":2026.677,"time":"2026-09-05T07:03:37.436Z","years_from_j2000":26.677,"frame":"date","applied":"Proper motion, then precession and nutation. The catalogued J2000 position is carried along the great circle the object's own published motion puts it on, at a constant velocity, and the result is referred to the true equator and equinox of this instant. Those are separate things: the motion moves the object, and the rotation turns the grid under it by about fifty arcseconds a year, with nutation adding up to another seventeen.","excluded":"Parallax, the radial-velocity perspective term, aberration and refraction; each is below the accuracy of the catalogued positions themselves. An object with no published proper motion comes back where the catalogue has it rather than at a fabricated zero, and says so with a null pm_ra_mas_yr. A body with no fixed position is not propagated at all — its place comes from an ephemeris, which is what /api/v1/visible answers with."},"slug":"hip-13227","name":"HIP 13227","class":"k1v_vi_orange_dwarf","category":"star","object_type":"K1V-VI orange dwarf","mag":11.03,"mag_band":"V","abs_mag":6.274,"abs_mag_band":"V","distance_ly":291.47127772845636,"distance_method":"parallax","ra_deg":42.575145,"dec_deg":-72.822787,"epoch_ra_deg":42.599849,"epoch_dec_deg":-72.711269,"epoch_moved_arcsec":1.512,"pm_ra_mas_yr":54.31,"pm_dec_mas_yr":-16.27,"orbits":null,"semi_major_axis_km":null,"periapsis_km":null,"mass_kg":null,"mass_msun":null,"constellation":"Hydrus","discovered":null,"featured":false,"url":"https://spacecatalog.org/object/hip-13227","radius_km":null,"radius_kind":null,"data_quality":null,"description":null,"properties":{"wds_id":"02503-7249","companions":[{"measured":2015,"magnitude":15.1,"components":null,"discoverer_code":"UC  824","separation_arcsec":12.2,"position_angle_deg":100}],"spectral_type":"K1V-VI","color_index_bv":0.76,"luminosity_solar":0.2694014941063667,"variable_mag_max":10.969,"variable_mag_min":11.099,"radial_velocity_km_s":0,"spectral_type_source":"SIMBAD (1974A&AS...16..277C, quality D)","proper_motion_ra_mas_yr":54.31,"proper_motion_dec_mas_yr":-16.27},"designations":[{"catalog":"HIP","designation":"HIP 13227"}],"source":{"id":"hyg","name":"HYG Database v4.1","url":"https://github.com/astronexus/HYG-Database","license":"CC-BY-SA-4.0"},"updated_at":"2026-09-02T19:50:56.720Z","attribution":"Data from SpaceCatalog.org. Individual records carry their source and license in `source`; attribution is required for CC-BY and CC-BY-SA rows."}